PHP enter percentage number round to 2 decimal places not working

Question

php number round to 2 decimal places not working my number is 0.00000000000000000000001 and I want result as 0.01. I tried php number_format() func

Answer 1

Number_format() and round() will not work in your case.

This functions adjust the decimals as per original math rules

in your case result will be always 0.00...as .01 will get converts to 0.0